WO1995013957A1 - Hydrostatic release device for safety equipment - Google Patents

Hydrostatic release device for safety equipment Download PDF

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Publication number
WO1995013957A1
WO1995013957A1 PCT/FR1994/001337 FR9401337W WO9513957A1 WO 1995013957 A1 WO1995013957 A1 WO 1995013957A1 FR 9401337 W FR9401337 W FR 9401337W WO 9513957 A1 WO9513957 A1 WO 9513957A1
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WO
WIPO (PCT)
Prior art keywords
cap
notch
cover
membrane
legs
Prior art date
Application number
PCT/FR1994/001337
Other languages
French (fr)
Inventor
Jean-Christophe Richard
Kenny Cadoux
Original Assignee
Richard Jean Christophe
Kenny Cadoux
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Richard Jean Christophe, Kenny Cadoux filed Critical Richard Jean Christophe
Priority to EP95901496A priority Critical patent/EP0728098A1/en
Priority to US08/640,880 priority patent/US5855450A/en
Publication of WO1995013957A1 publication Critical patent/WO1995013957A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/22—Devices for holding or launching life-buoys, inflatable life-rafts, or other floatable life-saving equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/69—Redundant disconnection blocking means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/59—Manually releaseable latch type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/59—Manually releaseable latch type
    • Y10T403/591—Manually releaseable latch type having operating mechanism

Definitions

  • the present invention relates to the field of safety equipment installed on ships, airplanes and the like and intended to come into action when they are poured into water. It relates more particularly to the design and production of a hydrostatic width 5 for any safety equipment usable during the accidents mentioned above.
  • ⁇ 15 are generally constituted by a rigid hollow case provided with a flexible member or membrane, sensitive to hydrostatic pressure, connected to the lock for holding the safety equipment and associated with a spring of determined force.
  • a hydrostatic pressure is exerted on the membrane, which
  • HAMAR marketed under the name or denomination HAMAR, we return to the housing system with membrane associated with a spring, the means for releasing the safety equipment consisting of a knife actuated by spring and intended to cut the holding device (European patent application No. 0198 805).
  • Such a system has various drawbacks, including: - significant oxidation of the various metallic organs,
  • the invention overcomes the various disadvantages of known devices including those mentioned above. Its purpose is to propose a device for releasing safety equipment based on the known principle of a housing with a sealed lower body and a cover, with flexible membrane associated with a spring and means for attaching safety equipment, but presenting the big advantage of being resettable and reusable at leisure.
  • this device of structure simple, has all the guarantees and can be tested, unlike most systems marketed to date.
  • the new width according to the invention is provided with a fastener for safety equipment and comprises a sealed lower body on which is fixed a cover crossed by a notch, a flexible membrane which comes to be interposed between said body and said cover and being capable of undergoing an inward bending of the body under the effect of pressure exerted from the outside, and a cap integral with said membrane, characterized in that the notch is provided with oriented shoulders towards the inside of the notch and being in a position such as vis-à-vis the upper part of the hat that the fitting of the fastener implies the crossing of the notch by the lower ends of said fastener, their passage beyond the shoulders of the notch as well as the thrust of the hat towards the interior of the body, in order to be received between the side walls of the hat and the walls of the notch and being blocked there as soon as the hat returns to the normal position, the exertion of pressure from the outside causing the said membrane to bend inward, this bending being accompanied by the displacement of the bonnet towards
  • a sectional view of a safety equipment width assembly according to the invention in the closed position (attachment for engaged safety equipment) - Fig2. a sectional view of the same width in the open position (attachment for safety equipment released).
  • the width essentially comprises: a lower body 1 to which is secured, by bolts or screws 15, a cover 2 with the interposition of a flexible membrane 3, as well as a fastening means 8 for equipment of security.
  • the body 1 is associated with a shaped part 6 to form a central housing 4 in which a spring 5 is positioned.
  • the element 6 is secured, by screw or bolt 16, to a cap 7 projecting from the cover 2, the elements 6 and 7 trapping the membrane at its center 3. Serving as support for the membrane 3, the shaped part 6 plays the role of slide.
  • the elements 6 and 7 move towards the inside of the lower body 1, by sliding, respectively for the element 6 around the central foot 1A of the lower body 1, and for the element 7 in the grooves 2A of the cover 2, when the width is immersed in water (Fig2.).
  • the attachment means 8 is here a single piece comprising a head 10, with passage 11 for connection of the holding member (not shown) of the safety equipment to its support , and legs 12 which have a lower end of cylindrical shape 13.
  • the engagement of the attachment means 8 in the closed position (Fig1.), that is to say the blocking of the ends 13 of the legs 12 between the side walls of the cap 7 and the shoulders 14, is carried out in the following ways: crossing the notch 9 by the cylindrical ends 13, bringing them together by pressing on the upper faces of the shoulders 14 and pushing them on the cap 7 towards the inside of the body 1, pushed which causes the compression of the spring 5 via the shaped part 6, their passage beyond the shoulders 14, then the return to the normal position of blocking of the cap 7 between the lower ends 13 legs 12.
  • the release of the attachment means 8 thus releasing the safety equipment, occurs when the device is immersed in water.
  • the pressure of the water introduced into the notch 9 causes the flexible membrane 3 to flex, which causes the cap 7 to move towards the inside of the body 1, therefore a separation of the upper part of the cap 7 from the shoulders 14, spacing which allows the ends 13 to pass through the notch beyond the shoulders 14.
  • the legs 12 of the fastening means 8 have a certain elasticity in order to allow the approximation of their cylindrical ends 13 and thus authorize the passage of said ends beyond the shoulders 14 of the notch 9 of the cover 2.
  • a chamfer 17 is advantageously provided on the upper edges of the cap 7.
  • Such a simple design width can be produced, under good economic conditions, in various suitable materials, for example, for the majority of parts, made of plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Safety Valves (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

An improved release device with a housing including a sealed lower body (1) and a cover (2) attached thereto with a flexible membrane (3) inserted therebetween, as well as an attachment portion (8) secured to the cover. Unlike known devices based on this principle, said device is testable and may be reset and reused at will. The essential features of the release device are that the body (1) is combined with a shaped member (6) that defines a central housing (4) for a spring (5), supports the membrane (3) and is secured to a cap (7) projecting into the cover (2), elements (6) and (7) being slidable about a lower portion (1A) of the body (1) by means of the membrane (3); and that in the normal closed position said attachment portion (8) is releasably engaged between said cap (7) and a recess (9) in said cover (2), whereby the safety equipment is released when the water pressure is sufficiently high. Said release device is particularly useful in emergency locator beacons, life rafts, etc., and more generally in any device designed for use under conditions involving pressure changes.

Description

Largueur hydrostatique d'équipement^ de sécurité Hydrostatic safety equipment width
La présente invention a trait au domaine des équipements de sécurité installés sur navires, aéroplanes et analogues et destinés à entrer en action lors de leur coulée dans l'eau. Elle concerne plus particulièrement la conception et réalisation d'un largueur hydrostatique 5 pour tout équipement de sécurité utilisable lors des accidents évoqués ci-dessus.The present invention relates to the field of safety equipment installed on ships, airplanes and the like and intended to come into action when they are poured into water. It relates more particularly to the design and production of a hydrostatic width 5 for any safety equipment usable during the accidents mentioned above.
On sait que, réglementairement, les navires et autres engins de certaines dimensions , susceptibles d'immersion totale accidentelle 10 dans l'eau, doivent être équipés de dispositifs de sécurité comprenant notamment des balises de détresse, des radeaux, etcIt is known that, by regulation, ships and other vehicles of certain dimensions, liable to accidental total immersion in water, must be equipped with safety devices including in particular distress beacons, rafts, etc.
On a proposé et/ou commercialisé depuis longtemps des dispositifs de largage, à fonctionnement manuel ou automatique, quiDropping devices, manual or automatic, which have been proposed and / or marketed for a long time, which
15 sont généralement constitués par un boîtier rigide creux muni d'un organe souple ou membrane, sensible à la pression hydrostatique, reliée au verrou de maintien de l'équipement de sécurité et associée à un ressort de force déterminée. Lorsque le dispositif est immergé dans l'eau, une pression hydrostatique s'exerce sur la membrane, ce qui15 are generally constituted by a rigid hollow case provided with a flexible member or membrane, sensitive to hydrostatic pressure, connected to the lock for holding the safety equipment and associated with a spring of determined force. When the device is immersed in water, a hydrostatic pressure is exerted on the membrane, which
:••. déclenche alors le système de libération (Voir les brevets d'invention déjà très anciens : GB-907.001 / GB-A-883.044 / GB-A-2.005.336 DE-1.245.787).: • •. triggers the release system (See patents for invention which are already very old: GB-907.001 / GB-A-883.044 / GB-A-2.005.336 DE-1.245.787).
Plusieurs perfectionnements récents ont été suggérés pour ces 25 dispositifs de largage. Par exemple, on a préconisé l'utilisation, comme organe deformable et au lieu d'une membrane, d'une poche souple de type chambre à air permettant d'éviter certains inconvénients de la membrane et de supprimer l'usage du ressort (Brevet Européen N°0296219). Toutefois, outre une réalisation assez délicate et plus 30 coûteuse en fabrication, un tel dispositif de largage pose un certain nombre de problèmes. En particulier, pour un niveau d'immersion donné, les forces dues à la pression s'exerçant sur la poche ou chambre à air sont réparties sur l'ensemble de la surface de celle-ci, et nonSeveral recent improvements have been suggested for these 25 release devices. For example, it has been recommended the use, as a deformable member and instead of a membrane, of a flexible pocket of the air chamber type making it possible to avoid certain disadvantages of the membrane and to eliminate the use of the spring (Patent European No. 0296219). However, in addition to a fairly delicate and more costly manufacturing process, such a release device poses a certain number of problems. In particular, for a given level of immersion, the forces due to the pressure exerted on the pocket or inner tube are distributed over the entire surface thereof, and not
FEUILLE DE REMPLACEMENT RÈGLE 26) uniquement dans l'axe de déclenchement du dispositif. La force résultante exercée pour actionner le système de libération de l'équipement de sécurité ne correspond donc pas à la force maximale (c'est à dire optimale) souhaitée, alors que cela est le cas lors de l'usage d'une simple membrane souple.SUBSTITUTE SHEET RULE 26) only in the trigger axis of the device. The resulting force exerted to activate the safety equipment release system therefore does not correspond to the maximum (ie optimal) force desired, whereas this is the case when using a simple membrane flexible.
Selon une autre réalisation, commercialisée sous le nom ou dénomination HAMAR, on revient au système de boîtier avec membrane associée à un ressort, le moyen de libération de l'équipement de sécurité étant constitué par un couteau actionné par ressort et destiné à sectionner l'organe de maintien (Demande de brevet Européen N°0198 805).According to another embodiment, marketed under the name or denomination HAMAR, we return to the housing system with membrane associated with a spring, the means for releasing the safety equipment consisting of a knife actuated by spring and intended to cut the holding device (European patent application No. 0198 805).
Un tel système présente divers inconvénients parmi lesquels il faut citer: - une oxydation importante des différents organes métalliques,Such a system has various drawbacks, including: - significant oxidation of the various metallic organs,
- un couteau qui présente des défauts de coupe s'il est en acier inoxydable et qui s'oxyde s'il n'y est pas, ne pouvant plus alors remplir sa fonction,- a knife which has cutting faults if it is made of stainless steel and which oxidizes if it is not there, which can no longer fulfill its function,
- un système d'attache de la balise fragile, en réponse au nombreux problèmes de coupe rencontrés,- a system for attaching the fragile tag, in response to the numerous cutting problems encountered,
mais l'inconvénient majeur concerne le fait qu'il ne fonctionne qu'une seule fois, le réarmement du système de coupe étant impossible. Cela revient donc à avoir un dispositif jetable et non testable ne répondant pas pleinement aux normes de sécurité souhaitées.but the major drawback concerns the fact that it only works once, resetting the cutting system being impossible. This therefore amounts to having a disposable and non-testable device that does not fully meet the desired safety standards.
L'invention permet d'obvier aux divers inconvénients des dispositifs connus dont ceux rappelés ci-dessus. Elle a pour but de proposer un dispositif de largage d'équipement de sécurité basé sur le principe connu d'un boîtier à corps inférieur étanche et couvercle, avec membrane souple associée à un ressort et moyen d'attache d'équipement de sécurité, mais présentant le gros avantage d'être réenclenchable et réutilisable à loisir. En outre ce dispositif, de structure simple, présente toutes les garanties et peut être testé, contrairement à la plupart des systèmes commercialisés à ce jour.The invention overcomes the various disadvantages of known devices including those mentioned above. Its purpose is to propose a device for releasing safety equipment based on the known principle of a housing with a sealed lower body and a cover, with flexible membrane associated with a spring and means for attaching safety equipment, but presenting the big advantage of being resettable and reusable at leisure. In addition, this device, of structure simple, has all the guarantees and can be tested, unlike most systems marketed to date.
Selon ses caractéristiques essentielles, le nouveau largueur selon l'invention est pourvu d'une attache pour équipement de sécurité et comprend un corps inférieur étanche sur lequel est fixé un couvercle traversé d'une échancrure, une membrane souple qui vient s'interposer entre ledit corps et ledit couvercle et étant capable de subir un fléchissement vers l'intérieur du corps sous l'effet d'une pression exercée de l'extérieur, et un chapeau solidaire de ladite membrane, caractérisé en ce que Péchancrure est pourvue d'épaulements orientés vers l'intérieur de Péchancrure et se trouvant dans une position telle vis à vis de la partie supérieure du chapeau que la mise en place de l'attache implique la traversée de Péchancrure par les extrémités inférieures de ladite attache, leur passage au-delà des epaulements de Péchancrure ainsi que la poussée du chapeau vers l'intérieur du corps, afin de venir se loger entre les parois latérales du chapeau et les parois de Péchancrure et s'y trouver bloqué dés le retour du chapeau en position normale, l'exercice d'une pression de l'extérieur entraînant le fléchissement de la ladite membrane vers l'intérieur, fléchissement qui s'accompagne du déplacement du chapeau vers l'intérieur du corps et d'un ecartement de la partie supérieure du chapeau des epaulements de Péchancrure, ecartement qui autorise la cessation du blocage des extrémités inférieures de l'attache, leur passage à travers Péchancrure au-delà des epaulements et la libération de ladite attache.According to its essential characteristics, the new width according to the invention is provided with a fastener for safety equipment and comprises a sealed lower body on which is fixed a cover crossed by a notch, a flexible membrane which comes to be interposed between said body and said cover and being capable of undergoing an inward bending of the body under the effect of pressure exerted from the outside, and a cap integral with said membrane, characterized in that the notch is provided with oriented shoulders towards the inside of the notch and being in a position such as vis-à-vis the upper part of the hat that the fitting of the fastener implies the crossing of the notch by the lower ends of said fastener, their passage beyond the shoulders of the notch as well as the thrust of the hat towards the interior of the body, in order to be received between the side walls of the hat and the walls of the notch and being blocked there as soon as the hat returns to the normal position, the exertion of pressure from the outside causing the said membrane to bend inward, this bending being accompanied by the displacement of the bonnet towards inside the body and a spacing of the upper part of the hat from the shoulders of the notch, spacing which allows the blocking of the lower ends of the fastener to cease, their passage through the notch beyond the shoulders and the release of said attachment.
D'autre caractéristiques et détails apparaîtront au cours de la description suivante d'un mode d'exécution, non limitatif, illustré par les dessins annexés qui représentent :Other characteristics and details will appear during the following description of a non-limiting embodiment, illustrated by the appended drawings which represent:
- Fig1. une vue en coupe d'un ensemble largueur d'équipement de sécurité selon l'invention, en position de fermeture (attache pour équipement de sécurité engagée) - Fig2. une vue en coupe du même largueur en position d'ouverture (attache pour équipement de sécurité libérée).- Fig1. a sectional view of a safety equipment width assembly according to the invention, in the closed position (attachment for engaged safety equipment) - Fig2. a sectional view of the same width in the open position (attachment for safety equipment released).
Tel que représenté sur les figures, le largueur comprend essentiellement : un corps inférieur 1 sur lequel est assujetti, par boulons ou vis 15, un couvercle 2 avec interposition d'une membrane souple 3, ainsi qu'un moyen d'attache 8 pour équipement de sécurité. Le corps 1 est associé à une pièce conformée 6 pour former un logement central 4 dans lequel vient se positionner un ressort 5. L'élément 6 est solidarisé, par vis ou boulon 16, à un chapeau 7 en saillie dans le couvercle 2, les éléments 6 et 7 emprisonnant en son centre la membrane 3. Servant de support à la membrane 3, la pièce conformée 6 joue le rôle de coulisseau. Comme on le verra plus loin, les éléments 6 et 7 se déplacent vers l'intérieur du corps inférieur 1 , en coulissant, respectivement pour l'élément 6 autour du pied central 1A du corps inférieur 1 , et pour l'élément 7 dans les gorges 2A du couvercle 2, lors de l'immersion du largueur dans eau (Fig2.).As shown in the figures, the width essentially comprises: a lower body 1 to which is secured, by bolts or screws 15, a cover 2 with the interposition of a flexible membrane 3, as well as a fastening means 8 for equipment of security. The body 1 is associated with a shaped part 6 to form a central housing 4 in which a spring 5 is positioned. The element 6 is secured, by screw or bolt 16, to a cap 7 projecting from the cover 2, the elements 6 and 7 trapping the membrane at its center 3. Serving as support for the membrane 3, the shaped part 6 plays the role of slide. As will be seen below, the elements 6 and 7 move towards the inside of the lower body 1, by sliding, respectively for the element 6 around the central foot 1A of the lower body 1, and for the element 7 in the grooves 2A of the cover 2, when the width is immersed in water (Fig2.).
Comme il ressort des figures, le moyen d'attache 8 est ici une pièce d'un seul bloc comportant une tête 10, avec passage 11 pour liaison de l'organe de maintien (non représenté) de l'équipement de sécurité à son support, et des jambes 12 qui ont une extrémité inférieure de forme cylindrique 13. L'engagement du moyen d'attache 8 en position de fermeture (Fig1.), c'est à dire le blocage des extrémités 13 des jambes 12 entre les parois latérales du chapeau 7 et les epaulements 14, s'effectue de la façons suivante : traversée de Péchancrure 9 par les extrémités cylindriques 13, leur rapprochement par appui sur les faces supérieure des epaulements 14 et leur poussé sur le chapeau 7 vers l'intérieur du corps 1 , poussé qui entraîne la compression du ressort 5 par l'intermédiaire de la pièce conformée 6, leur passage au delà des epaulements 14, puis le retour en position normale de blocage du chapeau 7 entre les extrémités inférieures 13 des jambes 12. Le dégagement du moyen d'attache 8 libérant ainsi l'équipement de sécurité, intervient lorsque le dispositif est immergé dans l'eau. En effet, la pression de l'eau introduite dans Péchancrure 9 provoque le fléchissement de la membrane souple 3 laquelle entraîne le déplacement du chapeau 7 vers l'intérieur du corps 1 , donc un ecartement de la partie supérieure du chapeau 7 des epaulements 14, ecartement qui autorise le passage des extrémités 13 à travers Péchancrure au-delà des epaulements 14.As is apparent from the figures, the attachment means 8 is here a single piece comprising a head 10, with passage 11 for connection of the holding member (not shown) of the safety equipment to its support , and legs 12 which have a lower end of cylindrical shape 13. The engagement of the attachment means 8 in the closed position (Fig1.), that is to say the blocking of the ends 13 of the legs 12 between the side walls of the cap 7 and the shoulders 14, is carried out in the following ways: crossing the notch 9 by the cylindrical ends 13, bringing them together by pressing on the upper faces of the shoulders 14 and pushing them on the cap 7 towards the inside of the body 1, pushed which causes the compression of the spring 5 via the shaped part 6, their passage beyond the shoulders 14, then the return to the normal position of blocking of the cap 7 between the lower ends 13 legs 12. The release of the attachment means 8 thus releasing the safety equipment, occurs when the device is immersed in water. In fact, the pressure of the water introduced into the notch 9 causes the flexible membrane 3 to flex, which causes the cap 7 to move towards the inside of the body 1, therefore a separation of the upper part of the cap 7 from the shoulders 14, spacing which allows the ends 13 to pass through the notch beyond the shoulders 14.
A cet effet les jambes 12 du moyen d'attache 8 présentent une certaine élasticité afin de permettre le rapprochement de leur extrémités cylindriques 13 et autoriser ainsi le passage desdites extrémités au-delà des epaulements 14 de Péchancrure 9 du couvercle 2. Afin de faciliter l'engagement et le dégagement des extrémités cylindriques 13, un chanfrein 17 est avantageusement prévu sur les arêtes supérieures du chapeau 7.For this purpose the legs 12 of the fastening means 8 have a certain elasticity in order to allow the approximation of their cylindrical ends 13 and thus authorize the passage of said ends beyond the shoulders 14 of the notch 9 of the cover 2. In order to facilitate the engagement and disengagement of the cylindrical ends 13, a chamfer 17 is advantageously provided on the upper edges of the cap 7.
Un tel largueur de conception simple peut être réalisé, dans de bonnes conditions économiques en divers matériaux adéquats, par exemple, pour la majorité des pièces, en matière plastique.Such a simple design width can be produced, under good economic conditions, in various suitable materials, for example, for the majority of parts, made of plastic.
En pratique, les différentes études et expérimentations réalisées ont montré que la combinaison des critères associés au ressort de soutien 5, à la membrane souple 3 (matériaux, diamètre, élasticité, densité, ...), et à la course de retrait du chapeau 7, permettent d'assurer précisément la profondeur de largage souhaitée. De plus la simplicité extrême du système de libération de l'équipement de sécurité assure l'entière fiabilité du déclenchement, quelles que soient la profondeur choisie et les conditions climatiques environnantes. In practice, the various studies and experiments carried out have shown that the combination of the criteria associated with the support spring 5, the flexible membrane 3 (materials, diameter, elasticity, density, ...), and the retraction stroke of the cap 7, ensure precisely the desired drop depth. In addition, the extreme simplicity of the safety equipment release system ensures complete reliability of the trigger, whatever the depth chosen and the surrounding climatic conditions.

Claims

REVENDICATIONS
1 • Largueur hydrostatique d'équipement de sécurité pour navires, aéroplanes et analogues pourvu d'une attache (8) comprenant un corps inférieur étanche (1) sur lequel est fixé un couvercle (2) traversé d'une échancrure (9), une membrane souple (3) venant s'interposer entre ledit corps (1) et ledit couvercle (2) et étant capable de subir un fléchissement vers l'intérieur du corps (1) sous l'effet d'une pression exercée de l'extérieur, un chapeau (7) solidaire de ladite membrane, caractérisé en ce que Péchancrure (9) est pourvue d'épaulements (14) orientés vers l'intérieur de Péchancrure et se trouvant dans une position telle vis à vis de la partie supérieure du chapeau (7) que la mise en place de l'attache (8) implique la traversée de Péchancrure (9) par les extrémités (13) de l'attache (8), leur passage au-delà des epaulements (14) ainsi que la poussée du chapeau (7) vers l'intérieur du corps (1), afin de venir se loger entre les parois latérales du chapeau (7) et les parois de Péchancrure (9) et s'y trouver bloqué dès le retour du chapeau (7) en position normale, l'exercice d'une pression de l'extérieur entraînant le fléchissement de la membrane (3) vers l'intérieur, fléchissement qui s'accompagne du déplacement du chapeau (7) vers l'intérieur du corps (1) et d'un ecartement de la partie supérieure du chapeau (7) des epaulements (14), ecartement qui autorise la cessation du blocage des extrémités (13), leur passage à travers Péchancrure au-delà des epaulements (14) et la libération de l'attache (8).1 • Hydrostatic width of safety equipment for ships, airplanes and the like provided with a fastener (8) comprising a waterproof lower body (1) on which is fixed a cover (2) crossed by a notch (9), a flexible membrane (3) interposed between said body (1) and said cover (2) and being capable of undergoing a bending towards the inside of the body (1) under the effect of a pressure exerted from the outside , a cap (7) integral with said membrane, characterized in that the notch (9) is provided with shoulders (14) oriented towards the inside of the notch and being in a position such as opposite the upper part of the cap (7) that the installation of the fastener (8) involves the crossing of the notch (9) by the ends (13) of the fastener (8), their passage beyond the shoulders (14) as well as the thrust of the cap (7) towards the inside of the body (1), in order to be housed between the side walls of the ch apeau (7) and the walls of the notch (9) and be blocked there as soon as the cap (7) returns to the normal position, the exertion of pressure from the outside causing the membrane to flex (3) inward, deflection which is accompanied by the displacement of the cap (7) towards the interior of the body (1) and a spacing of the upper part of the cap (7) of the shoulders (14), spacing which allows the end of the blocking of the ends (13), their passage through the notch beyond the shoulders (14) and the release of the fastener (8).
2 • Largueur selon la revendication 1 , caractérisé en ce que le moyen d'attache (8) est constitué par une pièce unitaire munie de jambes (12) dont l'élasticité permet le rapprochement de leur extrémités inférieures (13) et autorise ainsi le passage desdites extrémités (13) au- delà des epaulements (14) de Péchancrure (9) du couvercle (2). 3 • Largueur selon l'une des revendications 1 ou 2, caractérisé en ce que les extrémités inférieures (13) des jambes (12) du moyen d'attache (8) sont de forme cylindrique et ont un diamètre supérieur à l'épaisseur desdites jambes (12).2 • Width according to claim 1, characterized in that the attachment means (8) consists of a unitary piece provided with legs (12) whose elasticity allows the approximation of their lower ends (13) and thus allows the passage of said ends (13) beyond the shoulders (14) of the notch (9) of the cover (2). 3 • Width according to one of claims 1 or 2, characterized in that the lower ends (13) of the legs (12) of the attachment means (8) are of cylindrical shape and have a diameter greater than the thickness of said legs (12).
4 • Largueur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que des chanfreins (17) sont formés sur les arêtes supérieures dudit chapeau (7), pour faciliter l'engagement et le désengagement des extrémités inférieures (13) des jambes (12) du moyen d'attache (8).4 • Width according to any one of claims 1 to 3, characterized in that chamfers (17) are formed on the upper edges of said cap (7), to facilitate the engagement and disengagement of the lower ends (13) of legs (12) of the attachment means (8).
5 • Largueur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, en position de fermeture, la plus courte distance séparant un épaulement (14) et un chanfrein (17), est inférieure au diamètre des extrémités (13) des jambes (12) du moyen d'attache (8), et en ce que à partir d'un degré de fléchissement de la membrane (3), cette plus courte distance tend à excéder le diamètre des extrémités (13) des jambes (12) du moyen d'attache (8).5 • Width according to any one of claims 1 to 4, characterized in that, in the closed position, the shortest distance between a shoulder (14) and a chamfer (17), is less than the diameter of the ends (13) legs (12) of the attachment means (8), and in that from a degree of deflection of the membrane (3), this shorter distance tends to exceed the diameter of the ends (13) of the legs ( 12) of the attachment means (8).
6 • Largueur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le couvercle (2) est muni de gorges (2A) dans lesquelles coulissent des saillies correspondantes du chapeau (7). 6 • Width according to any one of claims 1 to 5, characterized in that the cover (2) is provided with grooves (2A) in which slide corresponding projections of the cap (7).
PCT/FR1994/001337 1993-11-16 1994-11-16 Hydrostatic release device for safety equipment WO1995013957A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP95901496A EP0728098A1 (en) 1993-11-16 1994-11-16 Hydrostatic release device for safety equipment
US08/640,880 US5855450A (en) 1993-11-16 1994-11-16 Hydrostatic release device for safety equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9313619A FR2712558B1 (en) 1993-11-16 1993-11-16 Hydrostatic width of safety equipment for ships, rafts, airplanes and the like.
FR93/13619 1993-11-16

Publications (1)

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WO1995013957A1 true WO1995013957A1 (en) 1995-05-26

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PCT/FR1994/001337 WO1995013957A1 (en) 1993-11-16 1994-11-16 Hydrostatic release device for safety equipment

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US (1) US5855450A (en)
EP (1) EP0728098A1 (en)
FR (1) FR2712558B1 (en)
WO (1) WO1995013957A1 (en)

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CN109334916A (en) * 2018-10-12 2019-02-15 东台市万舟船用设备有限公司 A kind of fixed structure applied on life jacket

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US9675058B2 (en) * 2011-05-19 2017-06-13 Bill D. Brown Fish recompression tool
FR3025781B1 (en) * 2014-09-12 2016-10-07 Airbus AIRCRAFT COMPRISING AT LEAST ONE EMERGENCY BEACON
CN104443281B (en) * 2014-12-05 2017-01-11 中电科（宁波）海洋电子研究院有限公司 Hydrostatic pressure release device
CN110588899B (en) * 2019-08-14 2021-07-13 招商局重工（江苏）有限公司 Hydrostatic pressure releaser of life raft

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Also Published As

Publication number Publication date
US5855450A (en) 1999-01-05
EP0728098A1 (en) 1996-08-28
FR2712558B1 (en) 1996-01-12
FR2712558A1 (en) 1995-05-24

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